Introduction

The sub PCBA on the BLU studio 5.5 holds the charging port and connects to both the speaker and motherboard assembly so it holds a major role in many functionalities that you seek in your mobile device. This guide will demonstrate step by step how to remove and replace this crucial component.

Parts

No parts required.

Image 1/3: Insert the plastic opening tool or a fingernail into the notch. Image 2/3: Apply force upwards until back panel becomes loosened. Image 3/3: Apply force upwards until back panel becomes loosened.
  • Locate the notch to remove the back panel at the lower left corner of the panel.

  • Insert the plastic opening tool or a fingernail into the notch.

  • Apply force upwards until back panel becomes loosened.

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Image 1/2: Locate the notch to remove the battery. Image 2/2: Locate the notch to remove the battery.
  • Remove the loosened back panel and set aside.

  • Locate the notch to remove the battery.

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Image 1/3: Remove the battery and set aside. Image 2/3: Remove the battery and set aside. Image 3/3: Remove the battery and set aside.
  • Insert a plastic opening tool or your fingernail into the notch and apply force upwards until the battery is loosened.

  • Remove the battery and set aside.

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Image 1/2: Seven 5mm screws. Image 2/2: Five 3.5mm screws.
  • Locate all twelve screws along the back panel:

    • Seven 5mm screws.

    • Five 3.5mm screws.

  • Using a Phillips #000 screwdriver, remove all twelve screws.

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Image 1/3: Be extra careful when prying open as it may damage or snap the thin sides of the panel. Image 2/3: Place the plastic opening tool inside the loosened panel and gently push upwards and move along the phone to remove the back panel. Image 3/3: Remove the panel as if you were turning the page of a book.
  • Now that all the screws have been removed, use a plastic opening tool to carefully pry at each of the corners until loosened.

  • Be extra careful when prying open as it may damage or snap the thin sides of the panel.

  • Place the plastic opening tool inside the loosened panel and gently push upwards and move along the phone to remove the back panel.

  • Remove the panel as if you were turning the page of a book.

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Image 1/2: Remove the screw using the Phillips #000 screwdriver. Image 2/2: Remove the screw using the Phillips #000 screwdriver.
  • Locate the screw holding down the sub PCBA.

  • Remove the screw using the Phillips #000 screwdriver.

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Image 1/3: Locate the flex cable connector just above the sub PCBA screw. Image 2/3: Using tweezers, detach both cables from the sub PCBA. Image 3/3: Using tweezers, detach both cables from the sub PCBA.
  • Locate the gold plated cable connecting the sub PCBA to the motherboard.

  • Locate the flex cable connector just above the sub PCBA screw.

  • Using tweezers, detach both cables from the sub PCBA.

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Image 1/2: Either the speaker will need to be loosened and removed alongside the sub PCBA or the wires disconnected and resoldered during reassembly. Image 2/2: Using tweezers, grab the PCBA and remove gently from assembly.
  • Note the red and blue wires connecting the sub PCBA to the speakers.

  • Either the speaker will need to be loosened and removed alongside the sub PCBA or the wires disconnected and resoldered during reassembly.

  • Using tweezers, grab the PCBA and remove gently from assembly.

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Conclusion

To reassemble your device, follow these instructions in reverse order.

Alec Coleman

Member since: 02/28/2017

301 Reputation

3 Guides authored

Team

USF Tampa, Team S1-G6, Nance Spring 2017 Member of USF Tampa, Team S1-G6, Nance Spring 2017

USFT-NANCE-S17S1G6

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8 Guides authored

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